shell test(too many arguments)

哈哈，这个里面有错误，以防下次再发生

echo -e "Please input three numbers:/c"
read var1 var2 var3
echo "$var1@$var2@$var3@"
if [ "$var1" lt "$var2" -a "$var1" lt "$var3" ]
then
  min="$var1"
else
  if test "$var2" lt "$var1" -a "$var2" lt "$var3"
  then
   min="$var2"
  else
   min="$var3"
  fi
fi
echo "minvalue=$min"

注意：lt gt等前面的小横线一定不要忘加了啊，否则很难看出来-lt -gt